PN#032195 SKU#12107 Rapid Dump Air Suspension Valve. (4) 1/8″ FPT Ports. Replaces Humphrey 250A N/O valves. Pilot operated. Dual delivery design allows for in-line plumbing of air spring lines and eliminates need for tee fittings. (4) 1/8″ FPT ports. Mounts on either right or left frame rail using 1/4″ mounting holes.